For Modul8 2.5.8 and up the minimum requirements are Mac OS X 10.4.11.

If Modul8 still does not work, check that the python framework is installed in your system (it should be in /system/library/frameworks). Normally the MacOS X 10.3 comes with Python pre-installed, however you may have deleted it.

Modul8 requires also that the BSD sub-system is enabled. See the support forum for details.

I have just changed computer and OS from 10.3.9 on an older powerbook G4 to 10.4.6 on a more recent powerbook G4 (not an Intel machine). I used the apple transfer wizard to transfer applications and data and when trying to open Modul8 after reauthorizing, it fails to open. The opening screen comes up and stays in limbo and the menu at the top works (except file functions) but the Modul8 interface fails to load. I just can't work it out. The new computer has a dual 128mb graphics card but this shouldn't make any difference.

I had a crash due to a powershortage. And after I restarted I couldnt start m8.
However I might be connected to the fact that i run several users on the same machine and I accidentally tried to open modul8 with another user-profile (which failed of course since it is not registered to this user-profile). While M8 closes down immediately (one or two bounces in the dock, no windows shown) after launch using my usual vj-user-profile, m8 will actually ask to be registered in my other user-profile. I dont know if this is because python doesnt launch until after the verification of registration.
I however have a vague recolection of some problems with multiple users and the python framework.

I tried:
- repairing r-w rights using disk-utilities,
- performing fsck
- reinstalling m8 2.02, erasing the old folder (2.02). I didnt think it would work though since a previous version (2.0) doesnt work eigthter.
- I checked to see if the Python.framework was in place (Library/Frameworks/Python.framework) and later updated to version 2.4.